The macro attached to the post there is in a ready-to-run state, all you need do is unzip it then import it into the Word document, for which you
• press Alt-F11 to open the VBE
• click on your document's entry in the panel on the left
• choose File|Import File
• navigate to and select the unzipped file
• press OK
• save the document.
Done. That's essentially the same as what the instructions in the link tell you to do. There really is nothing to simplify.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]